Here is the bit where he describes the children "at peace"
"I went into their apartment through the patio doors. The three children were all you know dressed you know in their pyjamas, you know they looked immaculate, you know they were just like angels, they all looked so happy and well looked after and content and I said to Kate, you know it's a bit early for the you know, for the three of them to be going to bed, she said ah they've had such a great time, they're really tired and you know err so I say, you know I can't remember exactly what, what you know the night attire, what the children were wearing but white was the predominant err colour, but you know just to reinforce they were just so happy, you know seeing you know obviously Gerry wasn't there but they were just all, just so at peace and you know they looked like a family who'd had such a fantastic time and err yeah then I left there, went and got my stuff, went back to the tennis courts and then err there was me, Matt and Russell and I think Gerry played a little, for a little while but he decided that he'd, he'd played enough tennis for that day and err was going back and so it left with me, Russell and err Matt and err Dan who was the, the you know the tennis coach from Mark Warner. "
What would be speculation would be for me to suggest that GM left immediately after DP arriving.